That isn't the only thing people are worried about though.
Having your electronic devices searched at customs is another real and present threat, especially for a community like nostr and Bitcoin. People are regularly pulled aside and forced to provide passwords and decryption keys to be allowed to enter the country, it's why I don't bring my usual dev machine with me when I go back to visit fam.
https://www.reddit.com/r/AskNetsec/comments/ejbaaz/had_my_phone_searched_by_customs_how_can_i_see/